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Remove the error of BlkFeatures::MQ to support multi-processor startup

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Co-authored-by: Chuandong Li <lichuand@pku.edu.cn>
This commit is contained in:
Zhang Junyang
2024-07-07 15:51:56 +00:00
committed by Tate, Hongliang Tian
parent 8acfc8eb6a
commit 870d542f60
2 changed files with 9 additions and 1 deletions
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9
kernel/comps/virtio/src/device/block/device.rs
View File

@ -113,7 +113,14 @@ impl DeviceInner {
);
let num_queues = transport.num_queues();
if num_queues != 1 {
return Err(VirtioDeviceError::QueuesAmountDoNotMatch(num_queues, 1));
// FIXME: support Multi-Queue Block IO Queueing Mechanism
// (`BlkFeatures::MQ`) to accelerate multi-processor requests for
// block devices. When SMP is enabled on x86, the feature is on.
// We should also consider negotiating the feature in the future.
// return Err(VirtioDeviceError::QueuesAmountDoNotMatch(num_queues, 1));
log::warn!(
"Not supporting Multi-Queue Block IO Queueing Mechanism, only using the first queue"
);
}
let queue = VirtQueue::new(0, Self::QUEUE_SIZE, transport.as_mut())
.expect("create virtqueue failed");

1
kernel/comps/virtio/src/device/block/mod.rs
View File

@ -25,6 +25,7 @@ bitflags! {
const FLUSH = 1 << 9;
const TOPOLOGY = 1 << 10;
const CONFIG_WCE = 1 << 11;
const MQ = 1 << 12;
const DISCARD = 1 << 13;
const WRITE_ZEROES = 1 << 14;
}